body{
    background-color: #EEEEEE;
}

.nav_top{
    height: 80px;
    background-color: #D56464;
    text-align: center;
    font-size: 34px;
    line-height: 80px;
    color: aliceblue;
}
.nav_top .nav1{
    display: none;
}
.nav_top .nav2{
    display: none;
}
.nav2 .c1{
    font-size: 38px
    color:whitesmoke;
}
.nav2 .c2{
    font-size: 32px;
}
.form-group{
    float: right;
    margin-top: 8px;
    box-sizing: border-box;
}
.form-group input{
    height: 25px;
    border-radius: 5px;
}
.nav{
    background-color: black;
    height: 50px;
    margin: 0 auto;
    opacity: 0.7;
}
.nav .nav_mid{
    height: 50px;
    width: 1200px;
    margin: 0 auto;
}
.nav a:hover{
    background-color: brown;
    height: 50px;
}
/*.nav span{*/
/*    position: absolute;*/
/*    width: 100%;*/
/*    height: 100%;*/
/*    top: 50px;*/
/*    background-color: yellow;*/
/*}*/
.nav_bottom{
    height: 40px;
    width: 1200px;
    margin: 0 auto;
    background-color: #FBFBFB;
    box-sizing: border-box;
}
.nav_bottom strong{
    line-height: 40px;
    font-size: 15px;
    margin-left: 10px;
    color: #666666;
}
.nav_bottom ul{
    float: right;
}
.nav_bottom li{
    color: black;
    float: right;
    line-height: 40px;
    font-size: 15px;
    margin: 0 10px;
}
.nav_bottom a{
    color: #00A67C;
    font-weight: bold;
}

.fixed {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 50;
    background-color: #0C0C0C;
}
/*  导航中的li starting   */
.nav_mid li{
    float: left;
    font-size: 20px;
    margin-left: 15px;
    margin-top: 7px;
}
.nav_mid li a{
    color: white;
}
/*   导航中的li ending    */